The Obagi Nu-Derm system was devised by Dr. Zein Obagi. Centered on
RetinRetin a micro gel
Retin a micro gel pump
Retin-a-A, this program does an excellent job of minimizing the blotchy poigmentation which comes with age and
sunActinic keratosis
Fontanelles - sunken
Liver spots
Sun protection
Sunburn
Sunburn first aid
Sunken fontanelles (superior view) damage. It also helps fine wrinkles to some extent.
Although Retin-A is an acne medication as well, the Obagi system is not primarily an acne treatment. I think you should look into standard medical therapy with topical and oral antibiotics. This is especially true for acne of the back.
At most, the Obagi system should be an adjunct to your medical anti-acne regimen.
Ask your dermatologist about this, or consult one of you haven't.
Best.
Dr. Rockoff